<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        /*#anniu{
            width:100%;
            height:80px;
            display: flex;
            justify-content: center;
        }
.button{
    width:200px;
    height:80px;
    background:rgb(255, 0, 0);
    display: inline-block;
    cursor: pointer;
    border: none;
    border-radius: 20px;
      position:relative;
}
span{
    color: white;
    font-size: 25px;
    cursor: pointer;
    position:relative;
     transition: 0.5s;
     text-align: center;
    
} 
span::after{
    content:"»";
    position:relative;
   left:20px;
    opacity: 0;
  
}
button:hover {
    background-color: black;
    background-image: url(07eed72ad47a2353aec3ab85.jpg);
    background-size: 200px 80px;

}
button:hover span{
    transition: all 0.5s linear ;
    position:relative;
    padding-right: 20px;
   
}

button:hover span:after{
    transition: all 0.5s;
    opacity: 1;
    position:relative;
    left:10px;
}*/
/*第一类*/
</style>
</head>
<body>
    <!--<div id="anniu">
    <button class="button" style="vertical-align: middle"><span>hover</span></button>
    </div>-->
</body>

</html>